i drive a stick shift every day and let me tell you two clutches in two years is just ridiculous chances are very good that if she burnt up clutches that fast shes probably shaved the gears in the tranny so bad that youll start seeing a lot of play in the transmissionmetal shavings that build up over time and freeze your tranny solid as for the not driving on hills does she not know how to let the clutch out just enough to get a slight forward momentum and balance the gas obviously not for real though be prepared based on her history to replace the tranny soon which will cost anywhere from just in parts plus another large chunk of labor she needs to quit being stubborn and get a car she actually knows how to drive